4531 Elite Hybrid Sport Vest:

• Front zipper w/mesh ventilation panels and scoop neck
• Comfortable, quilted nylon outer with HyperKewlTM fabric inner, water-repellant nylon liner, and black cotton-poly elastic trim
• Hybrid cooling solution for ultimate relief: Evaporative Cooling HyperKewlTM fabric
• Orovides 5-10 hours of cooling relief per soaking
• Phase Change Cooling Inserts maintain a comfortable 58 degrees F (14 degrees C) for up to 3 hours
• Include one (1) set of Cool PaxTM Phase Change Cooling Military Vest Inserts (7065 w/velcro)